380 
moderately wide sessile base of attachment. Length, commonly 
about four or five inches ; width near apex, about three and a 
half inches ; width near base, commonly about nine lines. 
Localities. —TASMANIA—Mersey. Victor1A—Bacchus Marsh. 
References —M‘Coy, Geol. Survey, Vic., Dec. II., 1875, p. 13, t. 
12, f.2-4; Feistmantel Records, Geol. Survey, India, 1876, IX., 
pt. 4, p. 123 ; Tenison-Woods, Proc. Lin. Soc., N.S. Wales, 1883, 
Vol. VILL, pt. 1, p. 127; R. Etheridge, jun., Cat. Aust. Fossils, 
1878, p. 96. 
GANGAMOPTERIS ANGUSTIFOLIA (McCoy). 
. Leaf linear, lanceolate, eight or nine times longer than 
wide; side straight, nearly parellel, pointed above, contracted. 
to a lengthened petiole below; nerves equal, those of the 
middle third of the frond nearly parallel, straight rather 
closer than those of the sides, which gradually divaricate 
towards the margin at a very acute angle; all the nerves 
dichotomise at irregular intervals, and those of the sides 
occasionally anastomose and are connected by a few transverse 
bars. 
Localities.—TASMANIA—Upper Marine Beds, Mersey. N.S. 
Wa tes—Guntawang, Newcastle. Victor14—Bacchus Marsh. 
References—McCoy (Cyclopteris), Annals Nat. Hist., 1847, XX., 
p. 148, t. 9. f. 3; ibid, Proc. Roy. Soc., V.D. Land, 1851, L., p. 306, 
t. 9. f. 3; Feistmantel, Rec. Geol. Survey, India, 1876, IX., pt. 4, 
p. 123 ; Tenison-Woods, Proc. Lin. Soc., 1883, Vol. VIIL, pt. 1., 
p. 127; R. Etheridge, junr., Cat. Aust. Fossils, 1878, p. 95. 
GANGAMOPTERIS CLARKEANA (Feistmantel). 
Frond spathulately rounded, of medium size, coriaceous, 
entire. symmetrical, rounded above but greatly attenuated 
towards the base, whence the somewhat thick and distant 
veins radiate, forking and forming an oblong network. 
Resembles G. spathulata. 
Localities.—N.S. W ALEsS—Bowenfels. 
References.—Tenison-Woods, Proce. Lin. Soc., N.S. Wales, 1883, 
Vol. VIII., pt. 1, pp. 127-128. 
SAGENOPTERIS (Presl.). 
Frond quadri-lobate arising from a terete stipe, lobes free to 
the base, articulate, deciduous, extremely variable even in the 
same frond, being hastate cultriform, rhomboidal, oblong, 
lanceolate, and unsymmetrical, coriaceous, thickened at the 
articulation. Costa immersed in the tissue at the base, but 
distinet towards the middle; veins arising at an acute angle, 
but diverging in ascending, anastomosing, forming a hexagonal 
rhomboidal network. Epidermis unequally rectangular above, 
polygonally areolate below, and pierced with stomata. 
SAGENOPTERIS RHOIFOLIA (Presl.). 
Frond very variable both as to the shape and size. Pinne 
narrow at the base, articulate, spathulate, obovate, or oblong 
